Product details
When the pros need an EQ, they turn to dbx. With a proven track record that spans four decades, dbx® EQs are the industry standard for touring, studios, and audio installations. With the dbx heritage of revered pro EQs, the 231s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls.

Specifications
Key Features
Simplicity
Very reliable
Dual 31-band, 1/3-octave Constant Q frequency bands
Switchable boost/cut ranges of ±6 or ±12 dB
Front panel bypass switch
±12 dB input gain range
4-segment LED ladders for monitoring output levels
XLR and TRS Inpts and Outputs
Frequency Response of 50kHz
Dynamic range of greater than 108dB